.footer {
    position: fixed;
    bottom:0;
    left:0;
    right:0;
    /* background-color:red; */
    display: flex;
    height:50px;

  }
.footer .rooter{
    flex: 1;
    
  }
 #a {
    font-size: 16px;
    display:block;
    width: 100%;
    height:100%;
    text-align: center;
    display:flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-around;
  }
  #a span{
    color: #52c41a;

  }

  ul,li{
      list-style: none;
  }